reuben
03-21-2021, 09:45 AM
I took Deep Blue (https://forums.thepaceline.net/showthread.php?t=262850) out for her maiden post-Reconstruction ride this morning.
I discovered two things that did not show up in yesterday's ride up and down the street, checking brake lever position before wrapping the bars.
1) The front derailleur cable needs to be bent further out of the way. No biggie.
2) The saddle made two disconcerting CRACK sounds withing two miles. My assumption is that this was the saddle slipping between two sets of teeth in the clamp. Returning home and putting enough pressure on the saddle seems to confirm this.
So now I'm double checking the torque. I can't remember what I torqued it to (and I started fiddling with it before I thought to check), but I'm finding all sorts of specs, depending on material, type of post, etc.
This is the seatpost clamp that holds the saddle, not the binder bolt in the frame that holds the seatpost.
The saddle is an Fizik Aliante R3 Open (https://www.fizik.com/us_en/aliante-r3-open-1.html), which has their proprietary Kium rails, which is some sort of steel alloy, and the saddle rails are 7mm in diameter
It takes a single 6mm Allen key, which according to this site (https://www.dedhambike.com/articles/torque-table-pg186.htm) should be torqued to 7.3-11.3 Nm. Looking at a similar page at Park Tool (https://www.parktool.com/blog/repair-help/torque-specifications-and-concepts), I can't tell what it should be, although they obviously think it should be higher.
In a rare moment of organization, I apparently threw away the old saddle so I can't measure those rails. It was an old '80s Selle Italia Turbo.
The seatpost is some sort of steel or aluminum alloy from the 80s - it's the original 3ttt post, and looks like this one (https://www.ebay.com/itm/3ttt-Mod-Record-27-2mm-Vintage-Bicycle-Seatpost-27-2-/223750669551).
I discovered two things that did not show up in yesterday's ride up and down the street, checking brake lever position before wrapping the bars.
1) The front derailleur cable needs to be bent further out of the way. No biggie.
2) The saddle made two disconcerting CRACK sounds withing two miles. My assumption is that this was the saddle slipping between two sets of teeth in the clamp. Returning home and putting enough pressure on the saddle seems to confirm this.
So now I'm double checking the torque. I can't remember what I torqued it to (and I started fiddling with it before I thought to check), but I'm finding all sorts of specs, depending on material, type of post, etc.
This is the seatpost clamp that holds the saddle, not the binder bolt in the frame that holds the seatpost.
The saddle is an Fizik Aliante R3 Open (https://www.fizik.com/us_en/aliante-r3-open-1.html), which has their proprietary Kium rails, which is some sort of steel alloy, and the saddle rails are 7mm in diameter
It takes a single 6mm Allen key, which according to this site (https://www.dedhambike.com/articles/torque-table-pg186.htm) should be torqued to 7.3-11.3 Nm. Looking at a similar page at Park Tool (https://www.parktool.com/blog/repair-help/torque-specifications-and-concepts), I can't tell what it should be, although they obviously think it should be higher.
In a rare moment of organization, I apparently threw away the old saddle so I can't measure those rails. It was an old '80s Selle Italia Turbo.
The seatpost is some sort of steel or aluminum alloy from the 80s - it's the original 3ttt post, and looks like this one (https://www.ebay.com/itm/3ttt-Mod-Record-27-2mm-Vintage-Bicycle-Seatpost-27-2-/223750669551).